<template>
  <div class="goodsinfo-container">
    <transition @before-enter="beforeEnter" @enter="enter" @after-enter="afterEnter">
      <div class="ball" v-show="ballFlag" ref="ball"></div>
    </transition>
    <div class="mui-card">
      <div class="mui-card-content">
        <div class="mui-card-content-inner">
          <swiper :lunbotuList="imgList"></swiper>
        </div>
      </div>
    </div>
    <div class="mui-card">
      <div class="mui-card-header">{{goodsinfo.title}}</div>
      <div class="mui-card-content">
        <div class="mui-card-content-inner">
          <p class="price">
            市场价:
            <del>￥{{goodsinfo.market_price}}</del> &nbsp;&nbsp;&nbsp;&nbsp;销售价:
            <span class="now_price">￥{{goodsinfo.sell_price}}</span>
          </p>
          <p>
            购买数量:
            <numbox @getcount="getSelectedCount" :max="goodsinfo.stock_quantity"></numbox>
          </p>
          <p>
            <mt-button type="primary" size="small">立即购买</mt-button>
            <mt-button type="danger" size="small" @click="addShopCar">加入购物车</mt-button>
          </p>
        </div>
      </div>
    </div>
    <div class="mui-card">
      <div class="mui-card-header">商品参数</div>
      <div class="mui-card-content">
        <div class="mui-card-content-inner">
          <p>商品货号:{{goodsinfo.goods_no}}</p>
          <p>库存情况:{{goodsinfo.stock_quantity}} 件</p>
          <p>上架时间:{{goodsinfo.add_time}}</p>
        </div>
      </div>
      <div class="mui-card-footer">
        <mt-button type="primary" size="large" plain @click="goDesc(id)">图文介绍</mt-button>
        <br />
        <mt-button type="danger" size="large" plain @click="goComment(id)">商品评论</mt-button>
      </div>
    </div>
  </div>
</template>
<script>
import swiper from "../subcomponents/swiper.vue";
import numbox from "../subcomponents/goodsinfo_number.vue";
export default {
  data() {
    return {
      id: this.$route.params.id,
      imgList: [
        {
          id: 2001,
          imgUrl:
            "//img.alicdn.com/imgextra/i3/1714128138/O1CN01dOtCxJ29zFlhOENY8_!!0-item_pic.jpg_800x800Q50.jpg_.webp"
        },
        {
          id: 2002,
          imgUrl:
            "//img.alicdn.com/imgextra/i1/1714128138/O1CN01GQ2hRK29zFkTKceTy_!!1714128138.jpg_800x800Q50.jpg_.webp"
        },
        {
          id: 2003,
          imgUrl:
            "//img.alicdn.com/imgextra/i4/1714128138/O1CN01IooAbp29zFkTA8Nrc_!!1714128138.jpg_800x800Q50.jpg_.webp"
        },
        {
          id: 2004,
          imgUrl:
            "//img.alicdn.com/imgextra/i1/1714128138/O1CN01XoLL1129zFkJtRmX0_!!1714128138.jpg_800x800Q50.jpg_.webp"
        }
      ],
      goodsinfo: {},
      ballFlag: false,
      selectedCount: 1
    };
  },
  components: {
    swiper: swiper,
    numbox
  },
  created() {
    this.getGoodsInfo();
  },
  methods: {
    getGoodsInfo() {
      this.goodsinfo = {
        add_time: new Date().toLocaleString(),
        goods_no: "SD2932214404",
        id: 10,
        sell_price: 2799,
        market_price: 2999,
        stock_quantity: 6,
        title: "小米(Mi)小米Note 16G双网通版"
      };
    },
    goDesc(id) {
      this.$router.push({ name: "goodsdesc", params: { id } });
    },
    goComment(id) {
      this.$router.push({ name: "goodscomment", params: { id } });
    },
    addShopCar() {
      this.ballFlag = !this.ballFlag;
      var goodsinfo = {
        id: this.id,
        count: this.selectedCount,
        price: this.goodsinfo.sell_price,
        selected: true
      };
      //调用store中的mutation来将商品加入购物车
      this.$store.commit("addToCar", goodsinfo);
    },
    beforeEnter(el) {
      el.style.transform = "translate(0, 0)";
    },
    enter(el, done) {
      el.offsetWidth;
      //动态让小球进入购物车
      const ballPosition = this.$refs.ball.getBoundingClientRect();
      const badgePosition = document
        .getElementById("badge")
        .getBoundingClientRect();
      const xDist = badgePosition.left - ballPosition.left;
      const yDist = badgePosition.top - ballPosition.top;
      el.style.transform = `translate(${xDist}px, ${yDist}px)`;
      el.style.transition = "all 0.5s cubic-bezier(.4,-0.3,1,.68)";
      done();
    },
    afterEnter(el) {
      this.ballFlag = !this.ballFlag;
    },
    getSelectedCount(count) {
      this.selectedCount = count;
      // console.log(count);
    }
  }
};
</script>
<style lang="scss" scoped>
.goodsinfo-container {
  background-color: #eee;
  overflow: hidden;
  .now_price {
    color: red;
    font-size: 16px;
    font-weight: bold;
  }
  .mui-card-footer {
    display: block;
    button {
      margin: 15px 0;
    }
  }
  .ball {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background-color: red;
    position: absolute;
    z-index: 66;
    top: 392px;
    left: 141px;
  }
}
</style>